Photo Album - PowerPoint PPT Presentation

1 / 61
About This Presentation
Title:

Photo Album

Description:

Photo Album – PowerPoint PPT presentation

Number of Views:81
Avg rating:3.0/5.0
Slides: 62
Provided by: janetd3
Category:
Tags: album | photo | voeg

less

Transcript and Presenter's Notes

Title: Photo Album


1
Introduction to Insects
Insect Biodiversity Phylum Arthropoda Characteris
tics Major Classes Insect Structure
Function External Internal Major Orders of Class
Insecta
2
Insects account for most of the earths
biodiversity
3
Insects account for most of the earths
terrestrial animal biomass
4
Arthropods Exoskeleton Segmented body parts
Paired appendages Open circulatory system Open
respiratory system Ventral nerve cord
Millipedes 2 or more prs. Legs / segment
5
Arthropods Centipedes 1 pr. Legs / segment
6
Arthropods Arachnids Cephalothorax, Abdomen 4
prs. Legs No antennae
Spiders
7
Arthropods Archnids Mites
8
Arthropods Insects 3 body parts 3 prs legs 2
prs wings 1 pr. Antennae
9
Exoskeleton
Prevents water loss Protection from
predators Muscle Attachments
10
(No Transcript)
11
Ultrastructure of the Insect Exoskeleton Cuticle E
pidermis (Cellular) Basement Membrane
Epicuticle (wax, lipids)
Exocuticle Sclerotin
Procuticle
Endocuticle Chitin
Chitin Nitrogenous polysaccharide (C8H13NO5)n
Chitin
Sclerotin
Quinones
12
(No Transcript)
13
Major Body Parts of Insects
14
Perception Vision Smell Taste Feeding
The Insect Head
15
Chewing Mouthparts
16
Sucking Mouthparts
17
Sucking Mouthparts
18
Insect proboscis inserted into plant vascular
tissue
19
Balsam Woolly Adelgid Proboscis
20
Thorax
Locomotion 3 prs. Legs 2 prs. wings
21
Insect Legs
22
Abdomen Reproduction Excretion Respiration Hearing
23
Sawfly ovipositing in pine needle
24
Nervous System Largely Decentralized
Central Brain Ventral nerve chord Peripher
al Ganglia
25
Circulatory System
Nutrient transport, Immune System, Hydraulic
mechanism No thermoregulation Not involved in
respiration
26
Digestive System
Foregut, Midgut, Hindgut Foregut Hindgut are
sclerotized Gut Enzymes Gut pH Microbial
Community
27
Respiratory System
Implications to insect size pesticide
efficacy
28
Female Reproductive System
29
Female Reproductive System pales weevil
Immature Ovaries
Oviduct
Mature Ovaries
30
Male Reproductive System pales weevil
31
Insect Growth and Development Growth Moulting I
mmature Stages Instars Endocrine
Control Ecdysone Moulting Hormone Steroid Devel
opment Rate Environmental factors
32
Insect Growth and Development Development Hemime
tabolous Egg - Nymph (instars) -
Adult Holometabolous Egg - Larva (instars) -
Pupa - Adult Parthenogenesis Polymorphism Endocrin
e Control Juvenile Hormone Terpene Diapause Obli
gate vs. Facultative Regulation Environmentally
Induced Changes Aestivation, Migration
33
Insect Growth Development
Incomplete (hemimetabolous) Development nymphs
Complete (holometabolous) Development larvae
34
(No Transcript)
35
Orthoptera Grasshoppers Chewing Mouthparts
Hemimetabolous Leathery fore wings Membranous
hind wings
36
Phasmatodea Walking Sticks Chewing Mouthparts
Hemimetabolous Herbivorous
37
Mantodea Mantids Chewing Mouthparts
Hemimetabolous Predators
Mantids illustrate common features of predators
38
Blattodea Termites Chewing Mouthparts
Hemimetabolous Social Feed on cellulose by using
symbionts
39
(No Transcript)
40
Blattodea Roaches Chewing Mouthparts
Hemimetabolous
41
Thysanoptera Thrips Highly Modified Mouthparts
Intermediate between chewing sucking Piercing
Sucking Mouthparts fused into cone
Asymmetric) Hemimetabolous (but complex) Fringed
wings
42
Hemiptera Bugs Sucking Mouthparts
Hemimetabolous, but sometimes very
complex Heteroptera Basal portion of forewing
leathery Most predatory
43
Hemiptera Bugs Homoptera Wings uniformly
membranous Most phytophagous Often very complex
life cycles
44
Homoptera Scale Insects reduced body parts
45
Coleoptera Beetles Chewing Mouthparts
Holometabolous Forewing thickened into
elytra Largest most diverse insect order
46
(No Transcript)
47
Weevils Largest insect family
48
Beetle Larvae Weevils, Bark beetles - grub-like
49
Beetle Larvae Leaf beetles - caterpillar-like
50
Diptera Flies Sucking Mouthparts
Holometabolous Hind wings highly reduced
halteres
51
Diptera Ectoparasitic fluid feeders
52
Diptera Gall - forming plant feeders
53
Diptera Parasites of insects
54
Lepidoptera Butterflies Moths Chewing
Mouthparts as Larvae Sucking as
adults Holometabolous Scaly Wings 3rd largest
insect order Mostly phytophagous
55
Lepidoptera Larvae
56
Hymenoptera Wasps, Bees, Ants Modified Chewing
Mouthparts Holometabolous Membranous Wings
Often Highly Modified Ovipositor 2nd largest
insect order
Sawfly adults
57
Sawfly larvae
58
Woodwasps
59
Bees
60
Parasitic wasps
61
Parasitic wasp larva in gypsy moth
Write a Comment
User Comments (0)
About PowerShow.com